| 1 | //===--- SystemZ.cpp - SystemZ Helpers for Tools ----------------*- C++ -*-===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "SystemZ.h" |
| 10 | #include "clang/Config/config.h" |
| 11 | #include "clang/Driver/DriverDiagnostic.h" |
| 12 | #include "clang/Driver/Options.h" |
| 13 | #include "llvm/Option/ArgList.h" |
| 14 | #include "llvm/TargetParser/Host.h" |
| 15 | |
| 16 | using namespace clang::driver; |
| 17 | using namespace clang::driver::tools; |
| 18 | using namespace clang; |
| 19 | using namespace llvm::opt; |
| 20 | |
| 21 | systemz::FloatABI systemz::getSystemZFloatABI(const Driver &D, |
| 22 | const ArgList &Args) { |
| 23 | // Hard float is the default. |
| 24 | systemz::FloatABI ABI = systemz::FloatABI::Hard; |
| 25 | if (Args.hasArg(options::OPT_mfloat_abi_EQ)) |
| 26 | D.Diag(diag::DiagID: err_drv_unsupported_opt) |
| 27 | << Args.getLastArg(options::OPT_mfloat_abi_EQ)->getAsString(Args); |
| 28 | |
| 29 | if (Arg *A = Args.getLastArg(clang::driver::options::OPT_msoft_float, |
| 30 | options::OPT_mhard_float)) |
| 31 | if (A->getOption().matches(clang::driver::options::ID: OPT_msoft_float)) |
| 32 | ABI = systemz::FloatABI::Soft; |
| 33 | |
| 34 | return ABI; |
| 35 | } |
| 36 | |
| 37 | std::string systemz::getSystemZTargetCPU(const ArgList &Args) { |
| 38 | if (const Arg *A = Args.getLastArg(clang::driver::options::OPT_march_EQ)) { |
| 39 | llvm::StringRef CPUName = A->getValue(); |
| 40 | |
| 41 | if (CPUName == "native") { |
| 42 | std::string CPU = std::string(llvm::sys::getHostCPUName()); |
| 43 | if (!CPU.empty() && CPU != "generic") |
| 44 | return CPU; |
| 45 | else |
| 46 | return ""; |
| 47 | } |
| 48 | |
| 49 | return std::string(CPUName); |
| 50 | } |
| 51 | return CLANG_SYSTEMZ_DEFAULT_ARCH; |
| 52 | } |
| 53 | |
| 54 | void systemz::getSystemZTargetFeatures(const Driver &D, const ArgList &Args, |
| 55 | std::vector<llvm::StringRef> &Features) { |
| 56 | // -m(no-)htm overrides use of the transactional-execution facility. |
| 57 | if (Arg *A = Args.getLastArg(options::OPT_mhtm, options::OPT_mno_htm)) { |
| 58 | if (A->getOption().matches(options::ID: OPT_mhtm)) |
| 59 | Features.push_back(x: "+transactional-execution"); |
| 60 | else |
| 61 | Features.push_back(x: "-transactional-execution"); |
| 62 | } |
| 63 | // -m(no-)vx overrides use of the vector facility. |
| 64 | if (Arg *A = Args.getLastArg(options::OPT_mvx, options::OPT_mno_vx)) { |
| 65 | if (A->getOption().matches(options::ID: OPT_mvx)) |
| 66 | Features.push_back(x: "+vector"); |
| 67 | else |
| 68 | Features.push_back(x: "-vector"); |
| 69 | } |
| 70 | |
| 71 | systemz::FloatABI FloatABI = systemz::getSystemZFloatABI(D, Args); |
| 72 | if (FloatABI == systemz::FloatABI::Soft) |
| 73 | Features.push_back(x: "+soft-float"); |
| 74 | |
| 75 | if (const Arg *A = Args.getLastArg(options::OPT_munaligned_symbols, |
| 76 | options::OPT_mno_unaligned_symbols)) { |
| 77 | if (A->getOption().matches(options::ID: OPT_munaligned_symbols)) |
| 78 | Features.push_back(x: "+unaligned-symbols"); |
| 79 | else |
| 80 | Features.push_back(x: "-unaligned-symbols"); |
| 81 | } |
| 82 | } |
| 83 |